Sudoku puzzle fans left puzzled by the last challenge should know the practical Y Wing technique. There are a number of Sudoku techniques that you can also use – such as the X-wing and Ring of Phistomefel methods – which will help you solve any puzzle you are having trouble with. And the Sudoku Y Wing method is another handy tool that will help you eliminate sections of the grid.
This nifty Sudoku technique explained in a post by Sudoku.com.
This technique can be used once you have gone through the entire puzzle and noted down all of the potential candidates for each grid.
You will look for a square in the Sudoku you are trying to solve that was two potential candidates.
This square is called the pivot – then you will need to find two squares in pincer.
Like the pivot, the clamps also have two potential candidates.
You will find the clamps in the same row, block or column as the pivot square.
One of the two numbers you find in the gripper must also appear in the pivot square.
Let us call, for the arguments, this number X.
What you will then need to do is try to find where the two pincer squares intersect.
Once you have found this square, look at which candidates are there.
In this square, you should see number X – which appeared in the pliers – as one of the candidates.
You can then remove that candidate from the square, helping you solve the puzzle.
If you have trouble visualizing this, check out the diagram in this article showing the pivot and clamps in green as well as the intersecting square.
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